//不打断alert
	function warn(msg,opt,left,top){
		if(opt){
		 	var obj = $("#"+opt);
		}
	 	new Toast({context:$('body'),message:msg},obj,left,top).show();
	}
	var Toast = function(config,obj,left,top){
		this.context = config.context==null?$('body'):config.context;//上下文
		this.message = config.message;//显示内容
		this.time = config.time==null?5000:config.time;//持续时间
		this.left = config.left;//距容器左边的距离
		this.top = ($(document).height()/4)*3;//距容器上方的距离
		if(obj){ 
		this.left = obj.offset().left + left;
		this.top = obj.offset().top + top;
		}
		this.init();
	}
	var msgEntity;
	Toast.prototype = {
		//初始化显示的位置内容等
		init : function(){
			$("#toastMessage").remove();
			//设置消息体
			var msgDIV = new Array();
			msgDIV.push('<div id="toastMessage">');
			msgDIV.push('<span>'+this.message+'</span>');
			msgDIV.push('</div>');
			msgEntity = $(msgDIV.join('')).appendTo(this.context);
			//设置消息样式
			var left = this.left == null ? this.context.width()/2-17-msgEntity.find('span').width()/2 : this.left;
			var top = this.top == null ? '20px' : this.top;
			msgEntity.css({position:'absolute',top:top,'z-index':'9999',left:left,'background-color':'#2a70e6',color:'white','font-size':'14px',padding:'12px',margin:'5px','border-radius':'4px','-moz-border-radius':'4px','-webkit-border-radius':'4px','font-family':'微软雅黑'});
			//msgEntity.addClass(".toast");
			msgEntity.hide();
	 	},
		//显示动画
		show :function(){
			msgEntity.fadeIn(this.time/2);
			msgEntity.fadeOut(this.time/2);
		}
	}
